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système d'appel |
call system : 36 phrases in 12 subjects |
Aviation | 7 |
Commerce | 1 |
Communications | 12 |
Computers | 2 |
Forestry | 1 |
Health care | 2 |
Information technology | 1 |
Microsoft | 1 |
Municipal planning | 1 |
Telecommunications | 5 |
Transport | 2 |
United Nations | 1 |